@BOOK{ Book!D - 100994829,
AUTHOR = "/ compiled and with solutions by Samuel L. Greitzer",
TITLE = "International mathematical olympiads, 1959-1977",
LIBRARY= "كتابخانه پردیس علوم (دانشگاه تهران)",
SUBJECT = "Mathematics -- Problems, exercises, etc.",
URL = "/book/100994829/International-mathematical-olympiads-19591977/"}